Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5156690 | Building low yield ratio hot-dip galvanized cold rolled steel sheet having improved refractory property | Kazuo Koyama, Takaji Takahashi, Nobuhiko Matsuzu | 1992-10-20 |